Bicycle



(No ModeL) J. J. NAREGANG.

BIGYCLE.

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P x f Lov b,UNITED STATES PATnN'r rrien JOHN J. NAREGANG, OF LEESPORT, PENNSYLVANIA.

BICYCLE.

SPECIFICATION forming part of Letters Patent N 0. 589,743, dated September *7, 1897.

Appliction filed July 30, 1896. Serial Na, 601,010. (ilo model) To aZZ witam, z't may colz'oci'it:

Be it known that-I, JOHN J; NAREGNof Lecsport, in the county of Berks andState'of Pennsylrenia, have inVented a new and use-` ful linproveinent in Bicyeles, of which the following` is a. specification.

My inventon is in the nature of an improveinent upon that pert'of the bicycle known as' the retr ;idjustingforlt,77 or the coupling` nt the rezir spox of the diamond-sheped trussed frame whereby the rear axle is inserted or reinoved. Such coupling is now usua-lly inide with an. open slot to permit easy insertion or relnovel of the renr', aitle, which letter is nd; justed to tighten or loosen the chziin by a set; sorew. My invention is of this general character, but comprehends a novel construction end arrungenlenteof parts by which the removal of the axle find its readjustinent without breaking' or opening the chain is more conveniently effected end a Stronger' end better construction provided, es will be hereinafter described with reference to the drawings, in which* Figurc l is a side elevzition of the coupling from the outside, pu-rtly'in section. Fig. 2 is e side elevation from the inside, also partly in section. Fig. 3 is a trensverse Vertical section on line 3 3 of Fig. 1. Fig. at is a horizontal section on line Ll et of Fig. l. Fig. 5 is n cross-section through line 5 5 of Fig. l, and Fig. G a. crosssection through line 6 6 of Fig. l.

In the drawings, A represents one of the tui bular members of the reer fo'rk, and B is one of the members of the horizonta'l tubes that connect the lower end of tubes A With the bearing of the pedal-sha-ft.

C is a fra'xne portion of the coupling which rigidly connects these two tubes A and B, it being understood that there is such a coupling and such n, pair of tubes'A and B on each side of the rear Wh eel which are connected by the rig'id axinl sli uft upon which the rea-r wheel reyolvcs. p

The coupling-frmne Cis directly connected to the tube A without :i thinible, and for this purpose the said frame is forincd with a fiat tongue C', thai' ext-ends up into the tube A, while the lower end of the letter is slotted longii'udintllynnd is made to elnbrace or struddle the fiet coupling-pla-te, in which relation the parts are solidly brezed together, with the tongue O' extending up into the tube A iu die- 'metrictl position and forining' a strong` but light reinforce for this joint.

The coupling-frmne O has an elongnted horz'ontal slot a, which hns an Outlet a' on its boi-tom side in front of the point of connection between plate Ci end tube A. In the horizontnl slot is ndjustnbly held the end of the axinl pin D, upon which the wheel rcvolves. This vaxizil pin is screw-threa-ded end upon each end has a cone-benring cl and a' screwnut d', which maybe ti ghtl y cleniped together uponoppositeosides of the eoupling-frmne to fiX it firinly thereto when the axial pin is ndjusted to its proper place. To effect this ndjustinent, the :trial pin 'is embraced by ther forked end Vc of an adjusting-screw E, which is erranged longitudinully to the horizontztl slot, and the outlet or open side of this forlced end is on the under side, so as to 4coincide with the Outlet a' of the slot when :idjusted opposite the same in order that the axial pin inny be dropped downwardly and taken out.

On the inner side of the adjusting-screw E there is fornied a shoulder e', which benrs against one of the hexugonel faces on the cone bearing (Z end looks the letter so that it cannot turn on the screW-thrended end of the axial pin D, so that the binding' effect of the sorew-nut (Z' on one side an d the oone-benring on the. other cannot be nccidentnlly relmzed.

To the inner end of the coupling'-f1'an1e the horizontztl tube B is brazed and its connection is reinforoed by a. thimblet and a tongue C2 of the frame, which is curved in cross-see tion to correspond to a seinicircuinference of the thilnble and, with the thinible, is rigidly connected to the tube B. This curved tongue also forms a seat or vguideway in which the in'- ner threaded end of the adjusting-screw E plays, always holding,` the sm'ne in a true ;mial position.

To advance the adjusting-scrcw E, it is einbruced by milled nut F, whose interior screwthread meshes with the thread of the adj usting-screw end whose outer periphery swivels in a, trnusverse slot of the coupling-frzune, which on each side of the nut is curvcd or bulged out latcrnlly nt I Z' to give passztge to the screw-steln. lVhen this nut is turned, it swivcls within the transverse slot of the couplin g-frmne and bearing' either against the side /or 1,' causes the screwstem E, with its forked head to move the axial pin back and forth in thehorizontal slot to tighten or loosen the chain, as niay be desired. I

To lock the axial pin to its adj ustment, the periphery of the nut F has notehes f in it to receive aturn-plate g, pivoted on a screw or rivet h to the coupling-frame and cut away on one side at g', so that When this cut-away side is next to the nut the latter can turn, but When the cut-away side is turned away from the nut the edge of the turn-plate enters one of the several notches in the peripliery of the nut and looks it against turning.

71th this construction of eoupling and adjusting device it will be seen that the axial pin of the rear wheel may be eonveniently adj usted to the rear to tighten the chain belt carried by the sprocket of the rear wheel, and When the latter requires to be taken off to remove or repair its tire or for other purpose the axial pin is adjusted forwardly by the nut and set-screw until it is in line with the outlet a' of the slot and can then be conveniently reinoved, and as this moveinent will slaeken the chain belt it Will be seen that the links of the latter need not be separated in removing` the wheel, but the i'einoval and replacement of the wheel inay be quiekly and conveniently effeeted.

I do not elaini, broadly, the slaekening of the belt and removal of the axial pin by the advance of the latter in its slot, as I am aware that this has beendone before.

Ilaving thus described my invent-ion, what l claiin as new, and desire to secure by Letters Patent, is-

l. A eoupling and adjusting` device for the rear apex of a bieycle-franie7 consisting` of a frame-plate having` a horizontal slot With an Outlet there'from at the lbottoin at its front end and a connection for the tube A in rear of said outlet combined With an axial pin arra-nged transversely in said slot, and a horizontal adjusting-screw having' a forked end opening downwardly at its rear end and loosely einbracing the axial pin and a swiveling nut arranged in the coupling-frame and nieshin g With the front part of the sereW-stem substantially as and for the purpose described.

2. The combination of the tubes A and B, the rigidly-attaehed plate O having horizontal slot With bottoin outlet a' near its front end a connection for tube A in rear of the Outlet and rounded projeetions Z Z', with transv'erse slot between them an axial pin arranged in the horizontal slot, a serew-stem E` having a forked end in the rear embracing the axial pin and having its frontend extending into the lower tube, and a swiveling nutl and looking device for the serew substantially as andfor thepurpose described.

3. The combination With the slotted coupling-plate and the axial pin arranged in the slot and having` a sereW-threaded end, of the screw-threaded cone-bearing fitting on the axial pin, `a clainping-nut on the end of the axial pin, and an adjusting-screw having' its end loosely connected to aXial pin, and provided With a looking-face engaging the conebearing` to prevent it frointurning substantially as and for the purpose described.

JOHN J. NAREGANG.

`\Vitnesses:

GEO. A. RAHN, JAooB KERN. 

